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| American Association of State Highway & Transportation Officials |
| American Coal Ash Association |
| American Concrete Pavement Association |
| American Concrete Pavement Association |
| American Road & Transportation Builders Association (ARTBA) |
| Associated General Contractors |
| Chesapeake Bay Foundation |
| Defenders of Wildlife |
| Delaware Department of Transportation |
| District of Columbia Department of Transportation |
| Environmental Protection Agency |
| Environmental Protection Agency Region 3 |
| Environmental Protection Agency Office of Solid Waste |
| Environmental Protection Agency Office of Wetlands |
| Federal Highway Administration |
| Foundry Industry Recycling Starts Today |
| Global Environment & Technology Foundation |
| HDR Inc. |
| Hicks Company |
| Low Impact Development Center |
| Maryland Department of the Environment |
| Maryland Department of Transportation US 301 |
| Maryland State Highway Administration |
| National Ready Mixed Concrete Association |
| Natural Resources Defense Council |
| NatureServe |
| New Hampshire Department of Transportation |
| New Jersey Department of Transportation |
| New York State Department of Transportation |
| Pavements For Life |
| Pennsylvania Department of Transportation |
| Parsons Brinckerhoff |
| Prince George's County |
| RBA Group |
| Slag Cement Association |
| The National Slag Association |
| TRB Environmental Geospatial Information for Transportation |
| University of Toronto Sustainable Transportation Page |
| U.S. Fish & Wildlife Service |
| U.S. Army Corps of Engineers |
| U.S. Department of Interior |
| V-REMS |
| We Energies |
| West Virginia Department of Environmental Protection |
| West Virginia Department of Transportation |
Links